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Mental retardation, or intellectual disability, impacts about 4.6 million Americans. More than 250 causes of intellectual disability have been discovered. This factbook provides young readers with important information on intellectual disabilities. Readers will learn about specific conditions, what causes them, how people live with them, and the latest information about treatment and prevention.
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Mental retardation, or intellectual disability, impacts about 4.6 million Americans. More than 250 causes of intellectual disability have been discovered. This factbook provides young readers with important information on intellectual disabilities. Readers will learn about specific conditions, what causes them, how people live with them, and the latest information about treatment and prevention.